Growth,reproduction and mortality of the sea hare Dolabella auricularia (Gastropoda: Aplysiidae) in the Central Visayas,Philippines |
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Authors: | D Pauly H Calumpong |
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Institution: | (1) International Center for Living Aquatic Resources Management (ICLARM), MCC P.O. Box 1501, Makati, Metro Manila, Philippines;(2) Marine Laboratory, Silliman University, Dumaguete City, Philippines |
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Abstract: | The growth parameters W and K of the von Bertalanffy growth equation were estimated from size-frequency data of the sea hare Dolabella auricularia using an objective, computer-based method. The results obtained from two locations in the central Philippines were comparable, although based on only a few individuals; the means for both sites were W =493 g and K=0.9 (yearly basis). A value of Z=3.66, corresponding to an annual survival rate of 2.6%, was estimated for the juveniles and adults from a length-converted catch curve. Spawning and recruitment were found to occur throughout the year with peaks in May to July and September to October.ICLARM Contribution No. 170 |
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